af146490bb
It is not needed due to the removal of the ctx field.
Reviewed-on: https://go-review.googlesource.com/16525
From-SVN: r229616
48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package sync
|
|
|
|
import "unsafe"
|
|
|
|
// defined in package runtime
|
|
|
|
// Semacquire waits until *s > 0 and then atomically decrements it.
|
|
// It is intended as a simple sleep primitive for use by the synchronization
|
|
// library and should not be used directly.
|
|
func runtime_Semacquire(s *uint32)
|
|
|
|
// Semrelease atomically increments *s and notifies a waiting goroutine
|
|
// if one is blocked in Semacquire.
|
|
// It is intended as a simple wakeup primitive for use by the synchronization
|
|
// library and should not be used directly.
|
|
func runtime_Semrelease(s *uint32)
|
|
|
|
// Approximation of syncSema in runtime/sema.go.
|
|
type syncSema struct {
|
|
lock uintptr
|
|
head unsafe.Pointer
|
|
tail unsafe.Pointer
|
|
}
|
|
|
|
// Syncsemacquire waits for a pairing Syncsemrelease on the same semaphore s.
|
|
func runtime_Syncsemacquire(s *syncSema)
|
|
|
|
// Syncsemrelease waits for n pairing Syncsemacquire on the same semaphore s.
|
|
func runtime_Syncsemrelease(s *syncSema, n uint32)
|
|
|
|
// Ensure that sync and runtime agree on size of syncSema.
|
|
func runtime_Syncsemcheck(size uintptr)
|
|
func init() {
|
|
var s syncSema
|
|
runtime_Syncsemcheck(unsafe.Sizeof(s))
|
|
}
|
|
|
|
// Active spinning runtime support.
|
|
// runtime_canSpin returns true is spinning makes sense at the moment.
|
|
func runtime_canSpin(i int) bool
|
|
|
|
// runtime_doSpin does active spinning.
|
|
func runtime_doSpin()
|